std::acosh

From Cppreference

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Defined in header <cmath>
float       acosh( float arg );		(C++11 feature)
double      acosh( double arg );		(C++11 feature)
long double acosh( long double arg );		(C++11 feature)

Computes hyperbolic arc cosine of arg

Contents 1 Parameters 2 Return value 3 See also 4 External links

[edit] Parameters

arg

-

floating point value

[edit] Return value

inverse hyperbolic cosine of arg

[edit] See also

asinh (C++11)	hyperbolic arc sine (function)
atanh (C++11)	hyperbolic arc tangent (function)
cosh	computes hyperbolic cosine (ch(x)) (function)

[edit] External links

Weisstein, Eric W. "Inverse Hyperbolic Cosine." From MathWorld--A Wolfram Web Resource.